Air cleaner



March" 24,1925. 1,530,645

1 yC. P. BROCKWAY AIR CLEANER Fil'dsept. 13, 1920 2 Sheng-sheet 1ATTORNEY INVENTOR.

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March 24, 1925.

v INVENTOR. Carl I? vBrac'lcwczy WMM ATTORNEY Patented Mar. 24, 19,25.`

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CARL r. BnocxwAY, oF ToLE-Do, oHIo,

ASSIGNO'R, BY -MES-NE ASSIGNMENTS, TO

STROMBERG MOTOR DEVICES COMPANY, 0F CHICAGOJ ILLINOIS, .A CORPORATION 0FILLINOIS. y

AIR CLEANER.

`Application led September 13, 1920. Serial No. 410,023.

To aZZ whom t may concern;

Be it knownJ that I, CARL P'. BRocKWAY, a citizen of the United' States,residin at Toledo, in the county of Lucas and tate of Ohio, haveinvented certain new and useful Improvements in Air Cleaners, of which Ideclare the following to be a full, clear, andexact description.'

This invention relates to improvements in.

air cleaners or purifiers, especially those employed for cleaning airused in internal combustion engines, and has for its object theprovision of means for the purpose specified which `shall be economicalto manufacture and efiicient in operation.

The principal object of this invention is the ,provision of an aircleaner which has its dust laden air discharged by a pressure reducingmeans.

Another object is to provide an air cleaner in which thedust isseparated by centrifugal force and discharged from the dust box by aseparately created blast.

Another object is to combine *the air cleaner with an internalcombustion engine in which the blast is obtained from the engineexhaust.

Other objects will appear as I proceed with a detailed description ofthe particular embodiment of the invention which for the the cleaner andshowing it operatively asso-- ciated with a blower.

Figure IV is a section on line 4 4 4of Figure III.

Fi re V is a viewsimilar to Figure III but s owingthe cleaner associatedwith the induction pipe of the blower.

Figure VI is a section on line 6-6 .of 7

Figure V.'

The air ofl'take pipe through which the clean air leaves the apparatusis indicated by numeral 1. When the cleaner is used in connection withan internal combustion en- Y gine this pipe is attached to the airintake of the carburetor. When the cleaner is used for other purposesthis pipe may be attached to any suction creating means, or in case theair to be cleaned is forced through the cleaner rather than drawnthrough by suction, the pi e 1 may constitute simply a yclean air discarge pipe. The separating chamber of the cleaner shown is made up of twoparallel end pieces 3 joined by a sheet metal element bent into aconvolute wall 2 which has spaced overlapping portions 4 and 5 upon theupper side thereof, forming an air inlet 6 to the interior 7 of theseparating chamber. ,The oiftake pipe 1 extends from end to end withinthe chamber 7, the end opposite the `o'utletbeing closed by the endplate3.v The pipe 1 is provided with a series of perforations 8, preferablyon or near its top portion, which serve to allow the clean air to enterpipe 1. The wall 2 is provided With one or more perforations 9throughout its length in the bot` tom of chamber 7 which serve as a freeoutlet for the outer skim of dust laden air to separate out bycentrifugal force assisted by gravity. The bottom may also beprovidedwith a series of smaller perforations 10, similar to the perforations 8above, which serve to allow some of the air which passed out throughopening 9 to reenter the chamber 7 after having deposited the greaterpart of the'suspended dirt particles. A dust box- 11 is rovidedextending throughout the length of) under side and enclosing theperforations 9 .and 10. The walls of the dust box 11 are ya rectangularsha ed Venturi tube 13. This Venturi tube is s own in Figure I asconstitutingrthe outlet of the exhaust p`pe 14 of an internal combustionenglne, not shown.

In the operation of this device, the air is drawn by the suction of theengine into the inlet 6 and is whirled at a high Ivelocit-y inthe-narrow passageway between plates 4 and 5 and discharged tangentiallyinto chamber where it continues its rotating motion around thecylinder 1. The outer skim of the rapidly revolving air contains most ofthe dirt due to centrifugal force acting with greater e'iect on theheavier particles, and

the separating chamber ou its' this outer skim of dust laden air isdirected i down into the dust box 11 by the edges of the opening 9.The'cleanest air is of course nearest the center of the Whirl, thereforethe air which is drawn by the suction of the engine down through theperforations 8 and on through the oll'take pipe 1, is piactically freedof dust particles. The higli velocity of the exhaust gases from theenfIn Figures III and IV, the dust box 11` of the air cleaner is cleaned bythe blast from the blower 15 creating a vacuum in the throat of theventuri 13, in much the same way in which the engine exhaust created thevacuum in the arrangement of Figure I.

In Figures V and VI, the outlet 12 of the dust box 11 ,is connected tothe induction pipe 16 of a blower 17, and the suction in the blowerintake draws' the dlust laden air from box 11 and discharges it throughpipe 18.

In the arrangement shown in Figures III to VI the air cleaner may beused to obtain clean air for any purpose and is not limited to a use inconnection with an internal combustion engine. It isalso obvious thatany pressure producing means or vacuum producing means may be used for.cleaning out the dust box 11 instead of the blowers illustrated inFigures III`and V. i

I/Vhile I have described my invention in detail and as` being embodiedin certain forms I do not intend to be limited thereto, a-s it isobvious that the same may be varied without departing from the scope ofthe in'- 'vention as defined in the appended claims..

I claim as my invention:4 1. An internal combustion enginek in coin-.bination with means for cleaning the'air as the engine 'for deliveringair thereto, a settling chamber for the dust, anejector connected withthe settling chamber, and means connecting the ejector with the exhaustconduit of the engine for operating the ejector with the engine exhaustgases.

2. An air cleaner for internal combustion engines, comprising, incombination, a cylindrical chamber'with a tangential inlet and ahorizontal axial outlet, a peripheral pocket at the lowermost.. portionof the. periphery to collect solid material, and engine ope 'ated meansfor continuously withdrawing the ac cumulatie-n of material from saidpocket by ejector action.

3. An air cleaner comprising, in combination, a cylindrical chamber witha tangential inlet-and an axial out-let, a peripheral pocket to collectsolid material, and a ioi'aminatedvbai'le projecting opposite to thedirection of rotation part way across said pocket.

4:. An air cleaner comprising, in combination, a cylindrical chamberwith a taugenA tial inlet and an axial outlet, a peripheral l pocketto-.collect solid material, and a fo aminated baffle projecting part wayacross said pocket.

5. An air cleaner, comprising, in combination, a chamber with atangential inlet and an axial outlet, a` peripheral pocket to collectsolid material, and iforaininated baffle means choking eddy currents insaid pocket, but permitting passage of solid material to said pocket. l

6. An internal combustion engine in combination with means for cleaningthe air as it is drawn into the engine for combustion purposes, andcomprising a centrifugal separator connected With the suction intake oi'the engine for delivering air thereto, an ejector connected with theseparator, and means connecting theejector with? the exhaust conduit ot'the engine for operating the ejector with the engine exhzust gases.

In testimony' whereof, I affix my sign-.1- ture.

CARL P. BROCKIVAY.

